[Gnuplot-info] 2 lines of xtics

[Wilfried K. <wil...@gm...>]

Hi !

I recently discovered pivot charts in Excel.
While the rendering is not as perfect as with gnuplot (especially for
latex integration), this feature is quite cool for rendering complex
data.
The basic idea is to provide several lines for the xtics.
Here is an example made with Excel 2010 :
http://img33.imageshack.us/img33/2893/2dxtics.png

I think such a result can be obtained using xtics (for hbw) and xmtics
(for BlockSize). But I don't really know how.
Furthermore, I do not have any clue on how to have more than two lines
with such a solution.

Does someone have any idea to this with gnuplot ?

Thank you !

Wilfried K.

PS : here is an example data file corresponding to the above example :


hbw	BlockSize	8	16	32	Colums
2	50	4,17198	4,16793	3,89913	3,02885
2	100	4,21908	4,21775	3,78856	3,05236
2	200	4,24002	4,23781	3,66784	2,98845
2	500	4,25776	4,23258	3,57771	2,64875
2	1000	4,25216	4,22121	3,52153	2,37671
3	50	5,9882	5,99525	5,46246	4,35246
3	100	6,10275	6,09506	5,34337	4,3587
3	200	6,13502	6,12775	5,1196	4,18988
3	500	6,15232	6,12088	5,01207	3,55759
3	1000	6,17388	6,14961	4,90655	3,07677
4	50	7,16163	7,13301	6,40267	5,21287
4	100	7,32222	7,28905	6,24217	5,15652
4	200	7,38001	7,331	5,97103	4,57647
4	500	7,40991	7,34586	5,85352	3,73692
4	1000	7,43365	7,41626	5,53288	3,32743
5	50	7,9758	7,93465	7,11937	5,82013
5	100	8,18808	8,13962	6,96093	5,70663
5	200	8,27238	8,19436	6,71287	4,79545
5	500	8,32901	8,22072	6,4675	3,94972
5	1000	8,36299	8,31976	5,98776	3,44018
10	50	9,67729	9,56415	8,06963	7,245
10	100	10,1679	9,94364	7,81294	5,88062
10	200	10,3915	10,0978	7,71242	5,06986
10	500	10,5716	10,3915	7,14721	4,28776
10	1000	10,6165	10,0499	6,08965	3,43618
15	50	10,0526	9,85771	8,06831	7,32775
15	100	10,8091	10,3627	8,20089	5,86304
15	200	11,1541	10,6012	8,0179	5,06813
15	500	11,3891	10,9835	7,37601	4,28262
15	1000	11,4836	9,64651	3,51027	3,4761
20	50	10,0225	9,7607	8,05886	6,88685
20	100	10,9907	10,3261	8,37316	5,80576
20	200	11,5556	10,6838	8,1059	4,96834
20	500	11,8022	10,6901	7,48284	3,82774
20	1000	11,8772	8,60491	2,72766	2,84542